Get tokens for both Trading API and Sell API with same redirect?
I'm using the new Sell API to keep track of inventory, but since my client wants eBay-hosted pictures, I have to use UploadSiteHostedPictures from the Trading API. Since they have different auth backends (oAuth for Sell and token/session for Trading), I'm faced with forcing them to sign in twice. They'll be pretty annoyed by that. When I do the grant redirect for oAuth, can I make it count for both oAuth tokens and Trading API tokens?